Today we are going to talk about eight graphics accelerators with proprietary designs that we managed to get in for review. All of them are based on the recently launched Nvidia GeForce GTX 660 Ti GPU.

ZOTAC GeForce GTX 660 Ti AMP! Edition 2 GB (ZT-60804-10P)

The graphics card is shipped in a medium-sized cardboard box. The product’s model name, memory amount, DirectX 11 support, extended warranty and Dual Silencer cooler are all mentioned on the front of the packaging:

There's a picture of the card on the back of the box. A few icons tell you that the card's cooler is 10°C more efficient and 10 dB quieter than the reference one and that the AMP! Edition is 10% faster. Key product features, supported Nvidia technologies and minimum system requirements are all listed there, too.

The Zotac GeForce GTX 660 Ti AMP! Edition is shipped together with the following accessories: two power adapters, a DVI->D-Sub adapter, a CD with drivers, utilities and other software, short and long versions of the installation guide, and a coupon for downloading TrackMania 2.

The graphics card is manufactured in China and has a recommended price of $229, exactly as the reference GeForce GTX 660 Ti 2GB. Zotac provides an extended 3-year warranty for this product.

The Zotac GeForce GTX 660 Ti AMP! Edition is the most compact graphics card in this review at only 191x100x37 millimeters.

And for the fifth time we can see the reference PCB design.

Like in the other four cases, the power system includes four phases for the GPU and two phases for the graphics memory.

The GK104 chip is revision A2. It was manufactured in Taiwan on the 18th week of 2012.

The base GPU frequency of the Zotac card is 1033 MHz (boosted to 1111 MHz), which is 118 MHz higher than the reference card’s. According to our monitoring tools, the GPU worked at 1215 MHz at peak loads. Its clock rate is dropped to 324 MHz at 0.987 volts in 2D applications.

The graphics memory comes from Hynix. The chips have the same marking as those of the other cards in this review.

As opposed to the other products, the memory frequency of the Zotac GeForce GTX 660 Ti AMP! Edition is 6608 MHz. This should give the Zotac an edge under heavy loads with enabled antialiasing. We’ll check this out in our performance tests soon.

Here’s a summary of this product’s specs:

Like its non-overclocked cousin, the Zotac GeForce GTX 660 Ti AMP! Edition is equipped with an original cooler called Dual Silencer. It has three copper heat pipes, 6 millimeters in diameter.

There are two 70mm fans installed on the compact aluminum heatsink and covered with a metallic casing.

The fans are branded Apistek and have a part number of GA81S2U. Their speed is PWM-regulated from 1100 to 3500 RPM.

One such fan is supposed to consume no more than 4.6 watts of power.

Let’s see how efficient the Dual Silencer is on the factory-overclocked Zotac GeForce GTX 660 Ti AMP! Edition.

Automatic fan mode

Maximum fan speed

Its performance is good overall but doesn’t match the best coolers. The GPU is 71°C hot in the automatic fan regulation mode and 65°C hot at the maximum speed of the fans.

Like the rest of the products in this review, the Zotac was tested for overclockability at the maximum Power Limit parameter, which was 123% for our sample. The GPU frequency could be increased by 65 MHz and the memory frequency by only 260 MHz, which is the worst result in this test session.

The final frequencies of the card were 1098/1176/6868 MHz.

The peak GPU frequency of the overclocked Zotac was 1280 MHz in 3D mode.

The overclocked GPU grew 72°C hot at a fan speed of 2490 RPM.

Now that we’ve glanced over each card, we can proceed to checking out their noise level and comparing their temperature and frequency parameters.